Anal Itching (Pruritus Ani) Causes, Medication, and Pain Relief Jan 19, - Anal itch, also known as pruritus ani, is an irritating, itchy sensation around the anus (the opening through which stool passes out of the body). Anal itch is a symptom, not an illness, and it can have many different causes. In most cases, a person with anal itch does not have a disease of the anus or rectum.
Learn about the causes, symptoms, diagnosis & treatment of Anal and Rectal Disorders from the Home Version of the Merck Manuals.

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Jan 13, - There are a number of causes of anus itching, but before you try to diagnose yourself, remember: an itchy bottom is often a symptom, not a diagnosis. Read about itchy bottom (pruritis ani), a symptom that produces a very strong urge to scratch the skin around your anus.